/// <summary>
/// 添加数据包到列表
/// </summary>
/// <param name="packet">数据包</param>
private void AddPacketToList(FileDataThransmitPacket packet)
{
listPacket.Add(packet);
addCount = (UInt32)(addCount + packet.FileData.Length);
if (addCount > mAttribute.Size)
{
overFlag = true;
}
if (packet.Fllow == FllowingFlag.Nothing)
{
fullFlag = true;
}
}
/// <summary>
/// 添加数据包--用于接收数据
/// </summary>
/// <param name="packet">校验后的数据包</param>
/// <returns>FileTransmitDescription 代码</returns>
public FileTransmitDescription AddPacketData(FileDataThransmitPacket packet)
{
try
{
if (fullFlag)
{
return(FileTransmitDescription.UnknowError);
}
if (!packet.CheckSame())
{
return(FileTransmitDescription.CheckError);
}
if (mAttribute.ID != packet.FileID)//检测ID是否一致
{
return(FileTransmitDescription.DifferentID);
}
if (CurrentPacket != null)
{
if (CurrentPacket.NextFragmentNum != packet.FragmentNum)//检测段号是否连续
{
return(FileTransmitDescription.DifferentFileLen);
}
if (CurrentPacket.Fllow != FllowingFlag.Exist) //检测上次是否已满
{
return(FileTransmitDescription.UnknowError);
}
else
{
AddPacketToList(packet);
return(FileTransmitDescription.Success);
}
}
else
{
AddPacketToList(packet);
return(FileTransmitDescription.Success);
}
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 文件包初始化--每次文件传输最大按200字节计算
/// </summary>
/// <param name="attribute">文件属性</param>
/// <param name="fileData">文件数据</param>
public FilePacketManager(FileAttribute attribute, byte[] fileData)
: this(attribute)
{
try
{
if (fileData.Length == 0)
{
throw new ArgumentException("打包数据长度不能为0");
}
int max = 200;
int count = fileData.Length / max;
int remain = fileData.Length % max;
for (int i = 0; i < count; i++)
{
UInt32 frage = (UInt32)(i * max);
var packet = new FileDataThransmitPacket(OperatSign.WriteFileThransmit, mAttribute.ID,
frage, FllowingFlag.Exist, fileData, (int)frage, max);
listPacket.Add(packet);
addCount = (UInt32)(addCount + max);
}
if (remain != 0)
{
UInt32 frage = (UInt32)(count * max);
var packet = new FileDataThransmitPacket(OperatSign.WriteFileThransmit, mAttribute.ID,
frage, FllowingFlag.Nothing, fileData, (int)frage, remain);
addCount = (UInt32)(addCount + remain);
}
else
{
CurrentPacket.Fllow = FllowingFlag.Nothing;
}
fullFlag = true;
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 文件服务--写文件数据传输
/// </summary>
/// <param name="transmitSeqNum">发送序列号</param>
/// <param name="receiveSeqNum">接收序列号</param>
/// <param name="cot">传输原因</param>
/// <param name="ASDUPublicAddress">ASDU公共地址</param>
/// <param name="transmitDataPacket">传输包数据</param>
public FileWritePacket(UInt16 transmitSeqNum, UInt16 receiveSeqNum,
CauseOfTransmissionList cot, UInt16 ASDUPublicAddress,
FileDataThransmitPacket transmitDataPacket)
: base(transmitSeqNum, receiveSeqNum, cot, ASDUPublicAddress, transmitDataPacket.GetPacketData())
{
}
